Jonas Bonn | 58e0166 | 2011-06-04 22:43:49 +0300 | [diff] [blame] | 1 | /* |
| 2 | * OpenRISC Linux |
| 3 | * |
| 4 | * Linux architectural port borrowing liberally from similar works of |
| 5 | * others. All original copyrights apply as per the original source |
| 6 | * declaration. |
| 7 | * |
| 8 | * OpenRISC implementation: |
| 9 | * Copyright (C) 2003 Matjaz Breskvar <phoenix@bsemi.com> |
| 10 | * Copyright (C) 2010-2011 Jonas Bonn <jonas@southpole.se> |
| 11 | * et al. |
| 12 | * |
| 13 | * This program is free software; you can redistribute it and/or modify |
| 14 | * it under the terms of the GNU General Public License as published by |
| 15 | * the Free Software Foundation; either version 2 of the License, or |
| 16 | * (at your option) any later version. |
| 17 | */ |
| 18 | |
| 19 | #ifndef __ASM_OPENRISC_UNALIGNED_H |
| 20 | #define __ASM_OPENRISC_UNALIGNED_H |
| 21 | |
| 22 | /* |
| 23 | * This is copied from the generic implementation and the C-struct |
| 24 | * variant replaced with the memmove variant. The GCC compiler |
| 25 | * for the OR32 arch optimizes too aggressively for the C-struct |
| 26 | * variant to work, so use the memmove variant instead. |
| 27 | * |
| 28 | * It may be worth considering implementing the unaligned access |
| 29 | * exception handler and allowing unaligned accesses (access_ok.h)... |
| 30 | * not sure if it would be much of a performance win without further |
| 31 | * investigation. |
| 32 | */ |
| 33 | #include <asm/byteorder.h> |
| 34 | |
| 35 | #if defined(__LITTLE_ENDIAN) |
| 36 | # include <linux/unaligned/le_memmove.h> |
| 37 | # include <linux/unaligned/be_byteshift.h> |
| 38 | # include <linux/unaligned/generic.h> |
| 39 | # define get_unaligned __get_unaligned_le |
| 40 | # define put_unaligned __put_unaligned_le |
| 41 | #elif defined(__BIG_ENDIAN) |
| 42 | # include <linux/unaligned/be_memmove.h> |
| 43 | # include <linux/unaligned/le_byteshift.h> |
| 44 | # include <linux/unaligned/generic.h> |
| 45 | # define get_unaligned __get_unaligned_be |
| 46 | # define put_unaligned __put_unaligned_be |
| 47 | #else |
| 48 | # error need to define endianess |
| 49 | #endif |
| 50 | |
| 51 | #endif /* __ASM_OPENRISC_UNALIGNED_H */ |